ONLY COMPATIBLE WITH THE ALARMSENSE RANGE (see here)

Product Details 

• A powerful wall-mounting open-area Sounder/Visual Indicator suitable for use with C-TEC’s CFP AlarmSense range of 2-8 Zone Two-Wire Fire Panels.
• IP65 rated.
• Up to 99dB(A) sound output at 1m.
• Ultra-bright red LED.
• Device locking facility.
• Max. five Open-Area Alarm Devices per AlarmSense zone.